On Wednesday, November 1, 2017 at 8:36:49 AM UTC-7, runr...@gmail.com wrote:
>
> I have scrapped the controller I was using because it wasn't working but
> it was something like this
> def display_form():
> *record = alpha.person(request.args(0)) or redirect (URL('index'))*
> form=SQLFORM(alpha.person,* record)*
> if form.process(keepvalues=True).accepted:
> response.flash = "Thank you for filling out the form."
> redirect(URL('thank_you'))
> elif form.errors:
> response.flash = "form has errors"
> else:
> response.flash = "please fill out the form"
> return dict(display_form=form)
>
> I was using the code from this section of the book
>
> "and if there is a record with the corresponding id, the SQLFORM generates
> an UPDATE/DELETE form for the record:
>
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> 8
>
> def display_form():
> record = db.person(request.args(0)) or redirect(URL('index'))
> form = SQLFORM(db.person, record)
> if form.process().accepted:
> response.flash = 'form accepted'
> elif form.errors:
> response.flash = 'form has errors'
> return dict(form=form)
>
> Line 2 finds the record and line 3 makes an UPDATE/DELETE form. Line 4
> does all the corresponding form processing.
>
> An update form is very similar to a create form except that it is
> pre-populated with the current record and it previews images. By default
> deletable
> = True which means the update form will display a "delete record" option.
>
> "
>
Did you have a request.args(0)? The redirect you mention seems to be
because of that. Just above the portion of the book you quote, there's
this:
You can modify the controller of the previous example so that when we pass
an additional integer argument in the URL path, as in:
1/test/default/display_form/2
On Tuesday, October 31, 2017 at 12:53:15 PM UTC-7, Dave S wrote:
>
>
>
> On Tuesday, October 31, 2017 at 11:54:59 AM UTC-7, R U wrote:
>>
>> I am curious of how to override an existing record in a database via a
>> form.
>>
>> Take for example a simple input of
>> db = DAL('sqlite://storage.sqlite')
>> db.define_table('person',
>> Field('email', requires=IS_EMAIL()),
>> Field('Your_Zipcode', requires=IS_NOT_EMPTY()),
>>
>> If the same email address is entered that was previously in the db I get
>> 2 records of the same e-mail.
>>
>> I don't want to go through the built in auth. I want to keep it simple.
>> If the person has to change his/her address s/he can simply fill in the
>> form and it overrides the existing record.
>>
>> I get redirected to index when I use the following in the controller.
>>
>> http://web2py.com/books/default/chapter/29/07/forms-and-validators#SQLFORM-and-insert-update-
>>
>>
>> What am i missing?
>>
>>
> Please show your controller function.
>
> In code that I have in front of me, I use update_or_insert() without a
> form. At home, I think I have an SQLFORM with an example of
> update_or_insert, and I don't remember any issues, but I can't show it to
> you from here.
>
> /dps
>
>
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